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Solar Panel calculator

Unsure of what a solar installation will cost? Take out the guesswork with tailored answers in just a few clicks.

Why use our calculator?

With the rising cost of energy in the UK and an increasing focus on sustainability, installing solar panels is a smart investment for your home or business. Our Solar Panel Calculator takes the guesswork out of the process, providing you with tailored answers in just a few clicks.

How many solar panels will you need?

What size system is right for you?

How much money could you actually save?

Explore our installation costs

Ready to save with solar? We can help if you own your home and your roof isn't thatched.

Hi ,
Besides saving money on your utility bill, what else motivates you to go solar?
(please choose one)

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Be more Green

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Use more Power
Guilt Free
(i.e. AC/Devices)

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Fear of Outages
(i.e. Grid Down)

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Cash in on 'Going
Solar' Incentives

What best describes you?

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I’m retired or dreaming of retirement

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I just bought my first home

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I’m ready to start my career/family

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My kids are in college

Fill in the blank. "When picking a solar partner, getting the best            is most important to me."
(please choose one)

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Warranty

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Value

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Technology

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Company

What Solution would you like?

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Solar PV only

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Solar PV

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+ Storage

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Solar PV

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+ EV

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Solar PV

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+ Storage

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+ EV

What best describes you?

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I have an EV

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I want an EV

What's your address?

We're calculating your system size

Recommended System Size

Environmental Impact ( years)

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metric tons

Number of Panels:

System size:

Battery:

How do you plan on aquiring your system?

Number of Panels:

System size:

Battery:

Environmental Impact
( years)

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metric tons

Number of Panels:

System size:

Battery:

Book your appointment


We always carry out a site survey to ensure you can get the best from your investment.

Thanks


We look forward to seeing you soon.
Step 1/

What Solution would you like?

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Solar PV only

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Solar PV

Icon

+ Storage

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Solar PV

Icon

+ EV

Icon

Solar PV

Icon

+ Storage

Icon

+ EV

What best describes you?

Icon

I have an EV

Icon

I want an EV

What's your address?

We're calculating your system size

Recommended System Size

Environmental Impact ( years)

Icon

metric tons

Number of Panels:

System size:

Battery:

How do you plan on aquiring your system?

Number of Panels:

System size:

Battery:

Environmental Impact
( years)

Icon

metric tons

Number of Panels:

System size:

Battery:

Book your appointment


We always carry out a site survey to ensure you can get the best from your investment.

Thanks


We look forward to seeing you soon.
Step 1/

How the Solar Panel Calculator Works.

Our Solar Panel Calculator is designed to give you a quick, accurate estimate based on your specific needs. Simply enter details about your property, energy usage, and location, and the calculator will determine:

  • Number of panels needed: Based on your roof size and energy consumption.
  • System size: The total capacity of your solar panel system in kilowatts (kW).
  • Potential savings: How much you could save annually by generating your own electricity.
  • Carbon footprint reduction: The environmental impact of switching to solar energy.

 

 

Factors That Affect Your Solar Panel Needs.

Energy Usage

Your household’s or business’s annual energy consumption is a key factor. The more energy you use, the larger the system you'll need.

Roof Size and Orientation

We always take into account your roof’s size, shape, and orientation (south-facing roofs are ideal in the UK).

Sunlight Availability

While the UK isn’t known for its sunshine, solar panels still perform well here, especially in areas with minimal shading.

Battery Storage

Adding a solar battery can increase your savings by storing unused energy for later use.

How Much Money Can You Save with Solar Panels?

The savings depend on various factors, including energy usage, electricity tariffs, and government incentives. On average, UK households save between £850 and £1,300 annually on electricity bills. With solar batteries, you can maximise savings by using stored energy during peak rate hours. To find out how much you could save with a solar panel installation, use our Solar Panel Calculator above or visit our savings page!

Get Started Today!

Switching to solar power is one of the best ways to save money and reduce your carbon footprint. Use our Solar Panel Calculator now to find out how much you could save and how many panels you’ll need. Contact us for a free consultation and take the first step towards a brighter, more sustainable future.

What do our clients say?

Check out our Google reviews

  • Excellent local solar installer. Just had 21 solar panels fitted, givenergy battery, inverter and car charger. Installation started sooner than I expected and communication was very good. Any issues or queries... read more

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    Alex Lattimore Avatar Alex Lattimore

    Cant fault them . I used fit solar to upgrade my existing battery area after trying the installer of my current system wanted x2 the price of what Fit solar... read more

    lhud64 Avatar lhud64

  • These guys did an amazing job. The installation was straight forward with zero mess or inconvenience. Mark gave me full instructions on how to work the app. And it's all... read more

    The Daddy Avatar The Daddy

    I was recommended by a friend to approach FitSolar for a quote to install a ten-panel solar system having already obtained quotes from four other local and national firms. Mark... read more

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    Mark Dickens Avatar Mark Dickens

  • We have been really impressed with the quality of work carried out throughout the whole process of planning and fitting our Solar energy system. The team were organised, communicated well... read more

    Nicola Price Avatar Nicola Price

    After several proposals and quotes we chose Fit Solar to install our system, absolutely no regrets, cost effective,professional advice and installation by a considerate and capable team.

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    John Goodman Avatar John Goodman

  • Cant fault them . I used fit solar to upgrade my existing battery area after trying the installer of my current system wanted x2 the price of what Fit solar wanted to increase the battery size. Their was a few issues mixing 2 different versions of FOXess batteries, but with there help all fixed. Nothing was to much trouble for them. A1 company. Lee

    lhud64 Avatar lhud64
    07/03/2025

  • Excellent local solar installer. Just had 21 solar panels fitted, givenergy battery, inverter and car charger. Installation started sooner than I expected and communication was very good. Any issues or queries were answered very quickly and they've done a tidy job. The quality of materials used is better than some others for example the bird guards are metal rather than plastic. I much preferred using a local installer rather than a national company for the quality of installation and follow up. Recommended local company for solar installation.

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    Alex Lattimore Avatar Alex Lattimore
    12/04/2025

  • We have been really impressed with the quality of work carried out throughout the whole process of planning and fitting our Solar energy system. The team were organised, communicated well and very thorough, and we are delighted with the quality of their work and the results are fantastic. We would highly recommend their services.

    Nicola Price Avatar Nicola Price
    13/09/2023
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